$('#production, #col, .pay, [name="size"]').on('input', recalcPrice);
recalcPrice();
function recalcPrice() {
const price = [
$('#production').val(),
...$('.pay:checked').get().map(n => n.value),
$('[name="size"]:checked').val(),
].reduce((acc, n) => acc + (n | 0), 0);
$('#final_price').html(price * ($('#col').val() | 0));
}